Taha-Ahmed, B., M. Calvo-Ramon, and L. de Haro-Ariet,  "W-CDMA uplink capacity and interference statistics of a long tunnel cigar-shaped microcells",  Communications and Networks, Journal of, vol. 6, no. 2, pp. 106-111, June, 2004.

Taha-Ahmed, B., M. Calvo-Ramon, and L. de Haro-Ariet,  "W-CDMA uplink capacity and interference statistics of a long tunnel cigar-shaped microcells (underground train case)",  Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on, vol. 3, pp. 2231-2235 Vol.3, Sept, 2004.

Ahmed, B. T., M. C. Ramon, and de. Haro L Ariet,  "Comments on the hybrid model for propagation loss prediction in tunnels",  Antennas and Propagation Magazine, IEEE, vol. 45, no. 5, pp. 156-158, Oct, 2003.

Ahmed, B. T., C. M Ramon, and de. Haro L Ariet,  "Capacity and interference statistics of highways W-CDMA cigar-shaped microcells (uplink analysis)",  Communications Letters, IEEE, vol. 6, no. 5, pp. 172-174, May, 2002.